Internal water inlet rotary drum type grating self-compensation slag removal device

Abstract

The utility model relates to the technical field of sewage treatment equipment, in particular to an internal water inlet rotary drum type grating self-compensation slag removal device which comprises a mounting bracket, the rotary drum grid cylinder is arranged on the mounting bracket and is used for filtering impurities in sewage; the deslagging screw is positioned below the rotary drum grid cylinder and is used for collecting and conveying the cleaned impurities; the slag removal assembly is mounted on the mounting bracket and comprises a soft scraper blade and a sawtooth scraper blade, the soft scraper blade is in close contact with the inner wall of the drum grid cylinder, and the sawtooth scraper blade is embedded into a gap of the drum grid cylinder; the sawtooth scraper is embedded into the gap of the drum grid cylinder, the sawtooth gap is matched with the gap of the drum grid cylinder in width, the embedding depth of the sawtooth scraper is adjusted through the first adjusting bolt and the second adjusting bolt, and the sawtooth scraper is used for removing impurities in the gap of the drum grid cylinder and preventing the impurities from blocking the gap and affecting the filtering efficiency. The soft scraping plate and the sawtooth scraping plate are clear in work division, the soft scraping plate is attached to the inner wall of the drum grid cylinder through the arc-shaped design, and impurities on the inner wall can be rapidly scraped off.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment equipment technology, and in particular to a self-compensating sludge removal device for an internally inlet rotary drum bar. Background Technology

[0002] In the field of wastewater treatment, bar screen cleaning equipment is an indispensable key component, and its performance directly affects the efficiency and quality of wastewater treatment. With the acceleration of industrialization and urbanization, the volume of wastewater discharge continues to rise, and its composition is becoming increasingly complex, placing higher demands on bar screen cleaning equipment.

[0003] Traditional bar screen cleaning devices have several drawbacks in actual operation: First, the cleaning method is relatively simple, mostly relying on simple mechanical scrapers, which is difficult to thoroughly remove various impurities attached to the gaps and inner walls of the bar screen. Especially for impurities that are sticky and hard, the bar screen is easily clogged, thereby reducing filtration efficiency and affecting the continuity of the sewage treatment process. Second, these devices lack an effective wear compensation mechanism. As the scrapers are used continuously, the wear becomes increasingly serious, resulting in a decrease in the fit between the scraper and the bar screen, which greatly reduces the cleaning effect. Frequent replacement of scrapers not only increases maintenance costs but also causes equipment downtime, affecting the normal operation of the sewage treatment plant.

[0004] Currently, some devices on the market have improved upon traditional bar screen cleaning devices, but they still have the following shortcomings: existing technologies only have simple straight scrapers, which are difficult to fully conform to the inner wall of the rotary drum, making it impossible to thoroughly remove impurities from the inner wall. Furthermore, they lack cleaning designs for gaps, causing these gaps to be easily clogged by impurities, reducing filtration efficiency and failing to achieve all-around cleaning. In view of the above, this utility model is proposed. Utility Model Content

[0005] In view of the shortcomings of the prior art and in order to solve the problems mentioned in the background art, this application provides an internal water inlet rotary drum bar self-compensating slag removal device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a self-compensating slag removal device for an internally inlet rotary drum screen, comprising:

[0007] Mounting bracket;

[0008] A rotary drum screen, mounted on the mounting bracket, is used to filter impurities in wastewater;

[0009] The slag discharge spiral, located below the rotary drum, is used to collect and transport the removed impurities;

[0010] The sludge removal assembly, installed on the mounting bracket, includes a soft scraper and a serrated scraper. The soft scraper is in close contact with the inner wall of the rotary drum grate cylinder, and the serrated scraper is embedded in the gap of the rotary drum grate cylinder. The serrated scraper is embedded in the gap of the rotary drum grate cylinder with the serration gap matching the gap width of the rotary drum grate cylinder. Its embedding depth is adjusted by the first adjusting bolt and the second adjusting bolt. It is used to remove impurities in the gap of the rotary drum grate cylinder and prevent impurities from clogging the gap and affecting the filtration efficiency.

[0011] High-pressure flushing pipe and medium-pressure flushing pipe are respectively installed on the top of the mounting bracket. The high-pressure flushing pipe is equipped with a high-pressure nozzle, and the medium-pressure flushing pipe is equipped with a medium-pressure nozzle. At least one medium-pressure flushing pipe has its nozzle aligned with the contact position between the soft scraper and the inner wall of the rotary drum, and the nozzle of the other medium-pressure flushing pipe is aligned with the contact position between the toothed scraper and the rotary drum.

[0012] The automatic adjustment device includes a scraper mounting frame, a slag removal mounting plate, a scraper mounting column, a lower adjusting spring, and an upper adjusting spring. The scraper mounting frame is connected to the scraper mounting column through a guide hole. The lower adjusting spring and the upper adjusting spring are respectively disposed at the upper and lower ends of the scraper mounting frame to automatically compensate for the wear of the soft scraper and maintain its tight fit with the inner wall of the rotary drum.

[0013] Optionally, the automatic adjustment device for the slag removal assembly further includes:

[0014] The lower adjusting nut and the upper adjusting nut cooperate with the lower adjusting spring and the upper adjusting spring, respectively, for manually adjusting the initial position of the scraper mounting bracket;

[0015] The guide section is set on the scraper mounting column and cooperates with the guide hole of the scraper mounting frame to restrict its movement to only the vertical direction.

[0016] Optionally, the elastic force of the lower adjusting spring is greater than that of the upper adjusting spring.

[0017] Optionally, the tooth gap of the serrated scraper matches the slit width of the rotary drum, and its embedding depth is adjusted by the first adjusting bolt and the second adjusting bolt.

[0018] Optionally, the nozzles of both the high-pressure flushing pipe and the medium-pressure flushing pipe adopt an intermittent opening mode, and the flushing pressure range of the high-pressure flushing pipe is 3-6MPa, while the flushing pressure range of the medium-pressure flushing pipe is 1-3MPa.

[0019] Optionally, the soft scraper is made of a non-metallic elastic material, and its contact surface is arc-shaped, consistent with the curvature of the inner wall of the rotary drum.

[0020] Optionally, the scraper mounting bracket and the slag cleaning mounting plate are fixed together by bolts, and the slag cleaning mounting plate is provided with a rectangular guide hole to limit the movement direction of the scraper mounting bracket.

[0021] Optionally, the surface of the spiral blades of the slag discharge spiral is covered with a wear-resistant coating, and its rotation direction is opposite to that of the rotating drum.

[0022] In summary, this application includes the following beneficial technical effects:

[0023] 1. In use, the soft scraper and the serrated scraper have clearly defined functions. The soft scraper, with its arc-shaped design, fits snugly against the inner wall of the rotating drum, enabling it to quickly and extensively scrape away impurities from the inner wall. The serrated scraper, on the other hand, precisely embeds itself into the gaps, deeply cleaning stubborn impurities in the gaps, greatly improving the sludge removal efficiency, reducing the residual time of impurities on the rotating drum, and ensuring the efficient operation of wastewater filtration. The stable connection between the scraper mounting bracket and the sludge removal mounting plate, as well as the design of the rectangular guide hole, ensure that the sludge removal component maintains a stable operating trajectory during operation, avoiding poor sludge removal effect caused by shaking or deviation, and providing a strong guarantee for the stable operation of the entire device.

[0024] 2. In use, the lower and upper adjusting springs of this utility model have different elastic coefficients, which can provide more precise and adaptable compensation force according to the actual needs of the soft scraper under different wear stages and working intensities. This enables the slag cleaning component to work stably under various complex working conditions, broadens the application range of the equipment, automatically compensates for soft scraper wear, and provides convenient manual adjustment functions. This reduces equipment downtime and maintenance time caused by slag cleaning component failure, while also reducing material costs caused by frequent scraper replacements and improving the economic efficiency of the equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the device in the embodiments of this application;

[0026] Figure 2 This is a schematic diagram of a partial structure of the device in an embodiment of this application;

[0027] Figure 3 This is a partial structural diagram of the heating component in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of a partial structure of the heating component in an embodiment of this application;

[0029] Reference numerals: 1. Mounting bracket; 2. Rotary drum grate; 3. Slag discharge spiral; 4. Slag cleaning assembly; 401. Soft scraper; 402. Serrated scraper; 403. Scraper mounting bracket; 404. Slag cleaning mounting plate; 405. Scraper mounting column; 406. Lower adjusting spring; 407. Lower adjusting nut; 408. Upper adjusting spring; 409. Upper adjusting nut; 412. First adjusting bolt; 413. Second adjusting bolt; 5. High-pressure flushing pipe; 6. Medium-pressure flushing pipe. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0031] This application discloses a self-compensating slag removal device for an internally inlet rotary drum bar.

[0032] Please see Figure 1 A self-compensating slag removal device for an internally inlet rotary drum screen, comprising:

[0033] Mounting bracket 1;

[0034] The rotary drum 2, which is mounted on the mounting bracket 1, is used to filter impurities in the sewage;

[0035] The slag discharge spiral 3, located below the rotary drum 2, is used to collect and transport the removed impurities;

[0036] The slag removal assembly 4 is installed on the mounting bracket 1 and includes a soft scraper 401 and a serrated scraper 402. The soft scraper 401 is in close contact with the inner wall of the rotary drum 2, and the serrated scraper 402 is embedded in the gap of the rotary drum 2.

[0037] Please see Figures 2 to 4 The slag removal component 4 is installed on the mounting bracket 1 and includes a soft scraper 401 and a toothed scraper 402. The soft scraper 401 is in close contact with the inner wall of the rotary drum 2, and the toothed scraper 402 is embedded in the gap of the rotary drum 2.

[0038] High-pressure flushing pipe 5 and medium-pressure flushing pipe 6 are respectively installed on the top of mounting bracket 1. High-pressure flushing pipe 5 is equipped with high-pressure nozzle, and medium-pressure flushing pipe 6 is equipped with medium-pressure nozzle. At least one nozzle of medium-pressure flushing pipe 6 is aligned with the contact position between soft scraper 401 and inner wall of drum grating cylinder 2, and the nozzle of the other medium-pressure flushing pipe 6 is aligned with the contact position between toothed scraper 402 and drum grating cylinder 2.

[0039] The automatic adjustment device includes a scraper mounting bracket 403, a slag removal mounting plate 404, a scraper mounting column 405, a lower adjusting spring 406, and an upper adjusting spring 408. The scraper mounting bracket 403 is connected to the scraper mounting column 405 through a guide hole. The lower adjusting spring 406 and the upper adjusting spring 408 are respectively set at the upper and lower ends of the scraper mounting bracket 403 to automatically compensate for the wear of the soft scraper 401 and keep it in close contact with the inner wall of the rotary drum 2.

[0040] The automatic adjustment device for the slag cleaning component 4 also includes:

[0041] The lower adjusting nut 407 and the upper adjusting nut 409 cooperate with the lower adjusting spring 406 and the upper adjusting spring 408 respectively, and are used to manually adjust the initial position of the scraper mounting bracket 403.

[0042] The guide section is set on the scraper mounting column 405 and cooperates with the guide hole of the scraper mounting bracket 403 to restrict it to move only in the vertical direction.

[0043] The adjusting spring includes a lower adjusting spring 406 and an upper adjusting spring 408, wherein the elastic coefficient of the lower adjusting spring 406 is greater than that of the upper adjusting spring 408.

[0044] The tooth gap of the serrated scraper 402 matches the slit width of the rotary drum 2, and its embedding depth is adjusted by the first adjusting bolt 412 and the second adjusting bolt 413.

[0045] The nozzles of both the high-pressure flushing pipe 5 and the medium-pressure flushing pipe 6 adopt an intermittent opening mode, and the flushing pressure range of the high-pressure flushing pipe 5 is 3-6MPa, while the flushing pressure range of the medium-pressure flushing pipe 6 is 1-3MPa.

[0046] The soft scraper 401 is made of non-metallic elastic material, and its contact surface is arc-shaped, consistent with the curvature of the inner wall of the rotary drum 2.

[0047] The scraper mounting bracket 403 is fixed to the slag removal mounting plate 404 by bolts, and the slag removal mounting plate 404 is provided with a rectangular guide hole to limit the movement direction of the scraper mounting bracket 403.

[0048] The surface of the spiral blades of the slag discharge spiral 3 is covered with a wear-resistant coating, and its rotation direction is opposite to that of the rotating drum grate cylinder 2.

[0049] Further explanation is needed:

[0050] The slag removal assembly 4 is a key component ensuring continuous and efficient filtration of the rotary drum grate. The soft scraper 401 is made of non-metallic elastic material, and its arc-shaped contact surface matches the curvature of the inner wall of the rotary drum grate, closely adhering to the inner wall and effectively scraping away attached impurities. The serrated scraper 402 is embedded in the gaps of the rotary drum grate, and the embedding depth is precisely adjusted by the first adjusting bolt 412 and the second adjusting bolt 413 to remove impurities from the gaps and prevent clogging that could affect filtration. In the automatic adjustment device, the scraper mounting bracket 403 is connected to the scraper mounting column 405 through a guide hole. The lower adjusting spring 406 and the upper adjusting spring 408 are placed at the upper and lower ends respectively to automatically compensate for the wear of the soft scraper 401 and ensure its close contact with the inner wall of the rotary drum grate. The lower adjusting nut 407 and the upper adjusting nut 409 facilitate manual adjustment of the initial position of the scraper mounting bracket 403, enhancing the convenience of debugging. Overall, the slag removal assembly 4 removes impurities in all directions, maintains the filtration performance of the rotary drum grate, and ensures stable operation of the equipment.

[0051] The high-pressure flushing pipe 5 and the medium-pressure flushing pipe 6 are both installed on the top of the mounting bracket 1. The high-pressure flushing pipe 5 is equipped with a high-pressure nozzle and adopts an intermittent opening mode. The flushing pressure range is 3-6 MPa. During the operation of the device, the high-pressure flushing pipe 5 uses high-pressure water flow to powerfully flush the rotary drum screen 2 and the slag removal assembly 4. For stubborn impurities attached to the rotary drum screen 2, the high-pressure water flow can effectively impact and remove them, ensuring that the gaps of the rotary drum screen 2 are unobstructed and maintaining good filtration capacity. At the same time, it also plays a role in cleaning the slag removal assembly 4, preventing impurities from accumulating on the soft scraper 401 and the serrated scraper 402, which would affect the slag removal effect. In conjunction with the medium-pressure flushing pipe 6, it achieves efficient cleaning for different types of impurities and parts, improving the cleaning efficiency and working performance of the entire internal water inlet rotary drum screen self-compensating slag removal device.

[0052] The working principle of the above embodiments is as follows:

[0053] First, the sewage flows into the rotary drum 2, which is mounted on the mounting bracket 1. As the core component of the filter, the rotary drum 2 uses its own slit structure to perform preliminary filtration on the sewage, intercepting impurities in the sewage. The purified water then flows out from the rotary drum 2, completing the preliminary solid-liquid separation.

[0054] Next, the cleaning component 4 starts to work. The cleaning component 4 is installed on the mounting bracket 1. The soft scraper 401 is closely attached to the inner wall of the drum grate cylinder 2. As the drum grate cylinder 2 rotates, it scrapes off the impurities attached to the inner wall. The serrated scraper 402 is embedded in the gap of the drum grate cylinder 2 to remove the impurities in the gap and ensure that the filtration function of the drum grate cylinder 2 is not affected.

[0055] Next, the automatic adjustment device comes into play. When the soft scraper 401 wears during the slag removal process, the lower adjusting spring 406 and the upper adjusting spring 408 in the automatic adjustment device will automatically compensate for the wear. The spring force will move the scraper mounting bracket 403 to keep the soft scraper 401 in close contact with the inner wall of the rotary drum 2, thus ensuring the slag removal effect.

[0056] Next, the high-pressure flushing pipe 5 and the medium-pressure flushing pipe 6 are activated. The high-pressure flushing pipe 5 and the medium-pressure flushing pipe 6 installed on the top of the mounting bracket 1 adopt an intermittent opening mode. The high-pressure flushing pipe 5 is equipped with a high-pressure nozzle and a flushing pressure of 3-6 MPa. It is mainly used to flush stubborn impurities on the rotary drum 2 and the slag removal assembly 4. At least one nozzle of the medium-pressure flushing pipe 6 is aligned with the contact position between the soft scraper 401 and the inner wall of the rotary drum 2, and the other is aligned with the contact position between the toothed scraper 402 and the rotary drum 2. The flushing pressure is 1-3 MPa to flush the contact area and prevent impurities from accumulating.

[0057] Finally, the slag discharge spiral 3 transports impurities. Located below the rotating drum 2, the slag discharge spiral 3 collects the impurities scraped off and washed down by the slag cleaning component 4, and transports them to a designated location by rotation for subsequent processing, thus completing the entire slag cleaning process and ensuring the continuous and stable operation of the equipment.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An inner water inlet rotary drum type trash rack self-compensation slag cleaning device, characterized in that, The utility model relates to a sewage treatment device, including: mounting bracket (1); Rotary drum cylinder (2) is set up on the mounting bracket (1), is used for filtering the impurity in sewage; Deslagging screw (3) is located below rotary drum cylinder (2), is used for collecting and transporting the impurity that is cleaned; Deslagging assembly (4) is installed on the mounting bracket (1), including soft scraper (401) and sawtooth scraper (402), the soft scraper (401) is in close contact with rotary drum cylinder (2) inner wall, the sawtooth scraper (402) is embedded to the slit of rotary drum cylinder (2); High pressure flush pipe (5) and medium pressure flush pipe (6) are arranged on the top of mounting bracket (1) respectively, the high pressure flush pipe (5) is configured high pressure nozzle, the medium pressure flush pipe (6) is configured medium pressure nozzle, wherein at least one nozzle of medium pressure flush pipe (6) is aimed at the contact position of soft scraper (401) and rotary drum cylinder (2) inner wall, and the nozzle of another medium pressure flush pipe (6) is aimed at the contact position of sawtooth scraper (402) and rotary drum cylinder (2); Automatic adjusting device, including scraper mounting frame (403), deslagging mounting plate (404), scraper mounting column (405), lower adjusting spring (406) and upper adjusting spring (408), the scraper mounting frame (403) is connected with scraper mounting column (405) through guide hole, lower adjusting spring (406) and upper adjusting spring (408) are arranged at the upper and lower ends of scraper mounting frame (403) respectively, are used for automatically compensating the wear of soft scraper (401), keep its close fit with rotary drum cylinder (2) inner wall.

2. The self-compensating debris cleaning device for an inner water inlet drum-type grille according to claim 1, characterized in that, The automatic adjusting device of the deslagging assembly (4) further includes: Lower adjusting nut (407) and upper adjusting nut (409) are respectively matched with lower adjusting spring (406) and upper adjusting spring (408), for manually adjusting the initial position of scraper mounting frame (403); Guide section is arranged on scraper mounting column (405) and is matched with the guide hole of scraper mounting frame (403), limits its only vertical movement.

3. The self-compensating debris cleaning device for an inner water inlet drum-type grille according to claim 1, characterized in that, The elastic force of lower adjusting spring (406) is greater than the elastic force of upper adjusting spring (408).

4. The self-compensating debris cleaning device for an inner water inlet drum-type grille according to claim 1, characterized in that, The sawtooth gap of sawtooth scraper (402) is matched with the slit width of rotary drum cylinder (2), and the embedding depth is adjusted through first adjusting bolt (412) and second adjusting bolt (413).

5. The self-compensating debris cleaning device for an inner water inlet drum-type grille according to claim 1, characterized in that, The nozzles of high pressure flush pipe (5) and medium pressure flush pipe (6) all adopt intermittent opening mode, and the flush pressure range of high pressure flush pipe (5) is 3-6MPa, and the flush pressure range of medium pressure flush pipe (6) is 1-3MPa.

6. The self-compensating, inner water inlet drum-type trash rack cleaning device of claim 1, wherein, The soft scraper (401) is made of non-metallic elastic material, and the contact surface is arc-shaped, which is consistent with the curvature of the inner wall of the rotary drum cylinder (2).

7. The self-compensating, inner water inlet drum-type trash rack cleaning device of claim 1, wherein, The scraper mounting frame (403) and the deslagging mounting plate (404) are fixed by bolts, and the deslagging mounting plate (404) is provided with a rectangular guide hole for limiting the movement direction of the scraper mounting frame (403).

8. The self-compensating, inner water inlet drum-type trash rack cleaning device of claim 1, wherein, The spiral blade surface of the deslagging screw (3) is covered with wear-resistant coating, and the rotating direction thereof is opposite to the rotating direction of the rotary drum grate cylinder (2).

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